BS_OEMName      db      'RUSSIA  '
BPB_BytsPerSec  dw      512
BPB_SecPerClus  db      1
BPB_RsvdSecCnt  dw      1
BPB_NumFATs     db      2
BPB_RootEntCnt  dw      224
BPB_TotSec16    dw      2880
BPB_Media       db      0f0h
BPB_FATSz16     dw      9
BPB_SecPerTrk   dw      18
BPB_NumHeads    dw      2
BPB_HiddSec     dd      0
BPB_TotSec32    dd      0
BS_DrvNum       db      0
BS_Reserved     db      0
BS_BootSig      db      29h
BS_VolID        dd      0
BS_VolLab       db      'RUSSIA     '
BS_FilSysType   db      'FAT12   '

lf equ 0ah
cr equ 0dh

jmp start_program

start_program:

    mov ah, 00h
    mov al, 0x03
    int 0x10

    mov ah, 02h
    mov dh, 0
    mov dl, 0
    int 0x10

    mov ah, 07h
    mov al, 8
    mov bh, 11110000b
    mov ch, 0
    mov cl, 0
    mov dh, 25
    mov dl, 80
    int 0x10

    mov ah, 02h
    mov dh, 8
    mov dl, 0
    int 0x10

    mov ah, 07h
    mov al, 8
    mov bh, 10010000b
    mov ch, 8
    mov cl, 0
    mov dh, 25
    mov dl, 80
    int 0x10

    mov ah, 02h
    mov dh, 16
    mov dl, 0
    int 0x10

    mov ah, 07h
    mov al, 8
    mov bh, 01000000b
    mov ch, 16
    mov cl, 0
    mov dh, 25
    mov dl, 80
    int 0x10

times 0x1fe-$ db 00h
db 55h,0aah
